Case Study: a global insurer transforms a black-box AS/400 system into a validated architecture baseline with CAST Imaging

Global Insurer maps an IBM AS/400 black box in weeks with CAST

A global insurer faced the challenge of a mission-critical but poorly documented IBM AS/400 system, which was a total black box. They needed to understand its structure and dependencies to make informed decisions about modernizing, buying, or building a new platform. The vendor CAST, using its CAST Imaging product, was engaged to help demystify this legacy environment.

CAST's solution automated the discovery and documentation of the complex system, creating a navigable knowledge base and clarifying dependencies. This process, which was completed in weeks instead of months, provided the client with a validated architecture blueprint, a catalog of operations, and a detailed roadmap. The results gave the global insurer the evidence needed to confidently weigh modernization options with clear cost-benefit and risk assessments.